<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            border: 1px solid skyblue;
            width: 100%;
            height: 400px;
        }

        iframe {
            height: 100%;
            width: 100%;
        }
    </style>
</head>

<body>
    <!-- 1.引入链接 -->
    <!-- 3.添加target值，在里面添加浮动框架得name值,不要向_blank添加下划线 -->
    <a href="./list.html" target="myIfram">list</a>
    <a href="./article.html" target="myIfram">art</a>
    <a href="./index.html" target="myIfram">index</a>
    <div>
        <!--2. 浮动框架,添加src默认值，并设置name值,frameborder 属性规定是否显示框架周围的边框。frameborder 属性规定是否显示框架周围的边框。 -->
        <iframe src="./list.html" frameborder='0' name="myIfram"></iframe>
    </div>
</body>

</html>